kbrain

CVE-2011-2561

HIGH · CVSS 7.1EPSS 1.1%EU EUVD

The SIP process in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 7.x before 7.1(5b)su4 and 8.x before 8.0(1) does not properly handle SDP data within a SIP call in certain situations related to use of the g729ar8 codec for a Media Termination Point (MTP), which allows remote attackers to cause a denial of service (service outage) via a crafted call, aka Bug ID CSCtc61990.

Key facts

CVSS score
7.1 (v2.0)
Severity
HIGH
CVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:C
Weakness (CWE)
CWE-399
EPSS score
1.1% (65th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2011-2544)
Published
August 29, 2011
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-2544 in the EU Vulnerability Database. Last updated in EUVD on September 17, 2024.

View on the EU Vulnerability Database

Affected products

  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager
  • cisco / unified communications manager

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain